NASHVILLE, Tenn. (AP) — An attorney says 3 Doors Down bassist Robert Todd Harrell has checked himself into drug treatment after being charged with killing someone while driving under the influence.

Attorney Ed Ryan says he could not disclose where Harrell is being treated.

Harrell is facing multiple charges, including vehicular homicide by intoxication. Authorities say he caused a fatal interstate crash in a Nashville suburb last weekend. Records show authorities discovered that Harrell had numerous narcotics on him while he was being processed into the Nashville jail.

Police say the 41-year-old bassist was speeding down Interstate 40 in his Cadillac CTS when he clipped the back of a pickup truck, causing a crash that killed the driver of the truck.